【作者】 韩智勇； 刘丹； 李启彬；

【Author】 HAN Zhi-yong~1,LIU Dan~2,Li Qi-bin~2 (1 Biogas Institute of Ministry of Agriculture,Chengdu,610041;2 College of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu,610031)

【机构】 农业部沼气科学研究所； 西南交通大学地球科学与环境工程学院；

【摘要】 通过将厌氧型生物反应器填埋场（ANBL）和准好氧矿化垃圾生物反应（SAARB）串联,组成新型的厌氧.准好氧联合型生物反应器填埋场（AN-SABL）,研究其产气速率、产气量,以及产气组分的变化规律,以期为其填埋气体的收集、利用和处理提供理论依据。实验表明,AN-SABL中的厌氧填埋单元的产气受到了抑制,其中ANBL2#单元和ANBL3#单元的产气率分别为49 L/kg和39L/kg,仅占ANBL1#的94.2%和75.0%,但提高回灌频率,能促进厌氧填埋单元的产气,其甲烷含量最大值可达到62.67%;ANBL夏季产气速率和产气量明显高于冬季,并以12h为周期交替出现产气高峰:此外,AN-SABL能够促进其厌氧单元的硝化和反硝化作用,N₂O的含量受季节和填埋场类型影响显著,其变化范围在17-40179ppm之间。ANBL的累积产气量在初始调整阶段呈对数增长,过渡酸化阶段呈线性增长,酸化产甲烷阶段呈指数增长。更多还原

【Abstract】 The anaerobic-semiaerobic bioreactor landfill（AN-SABL） had been devised combining an anaerobic bioreactor landfill（ANBL） with a semi-aerobic aged refuse biofilter（SAARB）.It was a novel bioreactor landfill.Its gas production volume and velocity,and gas constituents were researched,in order to provide a theoretical foundation for the collection,utilization and treatment of landfill gas.The results indicated that the gas production of the anaerobic units were inhibited in the AN-SABLs.The gas production rates in the ANBL2# unit and in the ANBL3# unit were 49L/kg and 39L/kg respectively,which were only 94.2%and 75.0%of that in the ANBL1#. However,the gas production in the anaerobic unit could be accelerated by increasing the recirculation frequency.The highest content of methane could reache up to 62.67%.Moreover,the gas production volume and velocity in the ANBL were much more in summer than those in winter, and the gas production peak appeared with a cycle of 12 hours.Besides,the nitrification and the denitrification would be enhanced remarkably in the AN-SABLs.It resulted that the content of N₂O,which fluctuated between 17ppm and 40179ppm,was influenced obviously by the seasonal variation and the landfill types.Based on the mathematical model of aerogenesis,the cumulative gas volume of the ANBL increased logarithmically in the initial aerobic phase;then increased linearly in the anaerobic acid phase;afterwards increased exponentially in the methane production of acid phase.更多还原